Federico Fieni is an italian producer. He starts making music in 2010 under the name of "Montana", producing hip hop beats and mixing for his group "Raza Blunt".
In 2015 he leaves his previous group and he starts a new project on his own, he starts producing EDM in addition to hip hop and change his artist name in "Redef_".
Under this name he releases in 2019 on the most popular stores Forgotten Chronicles (hip hop EP of old works) and Essential (EDM single).